George rudolph metten



@einen atent @fitter GEORGE RUDOLPH. METTEN, O F ST. LOUIS, V, MISSOURI, ASSIGNOR 'IOA HORACE BALDWIN, OF PAINESVILLE, OHIO.

FOUNTAIN PNN.

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Be it known that I., Geenen Runonrn Mn'rrnN, ot' St. Louis, in the county of St.`Louis,` and State of Missouri, have inventcd'a new and improved Fountain Pcn; and Iv do, hereby declare that the following is a full,

clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure lis a diametrical section through the improved fountainl pen.

Figure 2 is an enlarged .View of the supply tube and pen detached from the handle or fountain.

Figure 3 is a sectional vicw'of the elastic ink holder.

Figure 4 shows the invention applied to an extensible handle.. v

Figure 5 is an enlarged sectional view ofthe end of the supply tubo and its valve.

Similar letters vof reference indicate corresponding parts in the several figures. I

This invention relates to ,certain novel improvements on writing pens, which are constructed with elastic or flexible sacks in hollow holders or handles for containing the writing ink, and also with a provision for causing thc ink to flow to and supply the pen during the act of writing. l

The first part of my invention consists` in the employment of an elastic or iiexible tube or reservoir within a hollow penholder for containing the ink, and in so applying such reservoir that it will cause a free ilow of ink to the pen in the act of writing, and at the same time keep the ink' in the reservoir free from air', as'willhe hereinafter described.

Io enable others skilled in the art to understand my invention, I will describe itsconstruction and operation.

In the accompanying drawings, iig. l1, a represents the main handle orV holder, whichmay 'be' constructed of metal or`otler suitable material, and which' has a. cap, a', screwed upon one end, through which capa hole is made for the admission of air into the holder. Within this' hollow holder is a exiblc ink sack or fountain, b, which I prefer to make of India rubber, and which is secured in placc at its open end 'by means of a small ring, c, as shown. This sack b is not loluite as long as the holder containing' it, and is thus made foi-'the purpose of having a tubular and shouldered-sheath, Z, screwed into the open end of the holder, as shown in the drawings, whichv sheath serves, in .conjunction with the upper. portion of the supply tube'e, yto form a receptacle, and a means for receiving and holding the pen f. The Asupply tube e is screwed into the sheath d, so as Ito be firmly and tightly secured to the handle a, and so as to conduct ink from the reservoir or elastic sack to the pen. The outer end of this supply tube c terminates iii a slightly curved portion, e', in which a valve, g, is nicely fitted' so 'as to be pressed upon by the pen, when not in use, and thereby held firmly down upon its scat.

l When the instrument is used the pressure upon the point of the pen will, to a greater or less extent, relieve thc pressure upon said valve, and thus alloiv the ink to escape upon the pen.

In g. 5 a thin packing, t, isv represented as applied to the valve for more eectually closing the supply vent when the pen is not in use. Y

When the instrument, which I have above described, is not in use, the sliding tube A, upon the outside of the handle a, is drawn over the pen so as to protect it from injury.

In lig. 4 I have represented my invention applied to a tube, which is fitted intoa hollow handle in such manner as to form an extensible holder. That-portion of the instrumen-t to which the pen, supply tube, 4and fountain sack are applied, can be pressed into the holder or sheath so as to enclose and protect the pen when not in use.

It will be secu from the above description that thc ink is contained within'an elastic and iexible sack, so as toheA free from contact with tho air, said sack being enclosed within a holder, into which air is allowed to enter so as to compress the sack and cause it to collapse as thc ink iows from it. Thusit will be seen that while the ink is fully protected from escaping from the sack, except at the proper point,there will be no vacuum to obstruct its ow to thc pen, the atmosphere bcing allowed to press freely upon allsidcs of the ink-sack with out al'cc'ting thc condition of thc ink contained therein. y

The elastic pressure of the pen upon the valve, which is applied to the orifice of thc supply tube, will, when the pen is not in use, keep this orifice removed so as to allow a. free flow of the ink, in ziccordance with the force and.v rapidity of the strokes.

I do not desire to confine my invention to the precise construction of the supplying tube, as other means, operating substantially upon the principle herein described, may be adopted'. I prefer, however, the use of the contrvance described for conducting the ink tothe pen. i

The supply tube e is provided with a, filtering substance, such as sponge or pumice-stone, for the purpose of arresting any sediment which might be in the ink-sack, and preventing the clogging up of the fineopening or passage leading to the valve-chamber.

Having described my invention, what I claim as new, and desire to secure by Letters Potent, is

1. In` combination with an air-tight and ilexible ink-sack, which is applied within the handle or holder of n. fountain pen, so as to be free to collapse as the ink-flows from it, I claim a. tube, e, which extends beneath the pen f, und is provided with a valve, g, at the point of discharge, so that in the act of Writing the ink shall be caused to owto the pen with greateror less' freedom, according to the force and rapidity of the strokes, substantially as specified.

2. A fountain pen, which is provided with a, thin, bolder by means of n ring, c, in combination with a removable pen-sheath, cl, and supply tube e, substantially as described.

3. In combination with the exible sack 6 and ink supply-tube e, I claim the conical valve-or plug g, acting :is u regulator during'the not of Writing, and serving to close the aperture when there is no pressurenpplicd to the nib of the pen,"substa,ntolly as described.

i G. R. METTEN.

Witnesses:

H. E. CURTIS, E. S. PEAsE.

closed, and, when the pen is in use, this pressure will be -more or lesel air-tight, flexible sack, applied within the pen-handle or l 

